Home / 12,125,860.40-18,188,790.60-7,342,891.40

Finding the Fourth Proportional to 12,125,860.40, 18,188,790.60 and 7,342,891.40

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Solution

The fourth proportional to 12,125,860.40, 18,188,790.60 and 7,342,891.40 is: 11,014,337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125,860.40 : 18,188,790.60 = 7,342,891.40 : x
  2. Step 2: Convert to fraction form
    12,125,860.40/18,188,790.60 = 7,342,891.40/x
  3. Step 3: Cross multiply
    12,125,860.40x = 18,188,790.60 × 7,342,891.40
  4. Step 4: Simplify right side
    12,125,860.40x = 133,558,314,073,140.86
  5. Step 5: Solve for x
    x = 133,558,314,073,140.86/12,125,860.40
  6. Step 6: Final answer
    x = 11,014,337.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.